Like many in the UK, I've been hit by the edvan dialer and am doing my best to rid myself of this problem. Having considered the advice on different forums, I have manage to get this far but could do with any further aid on offer. So far I have found the following 3 suspicious files (c\I386\LSASS.exe; c\I386\svchost.exe; and c\Window\prefetch\svchost.exe-2d5fbd18.pf [I have a number of similar files like the last one but not svchost]) My Hijackthis log is reproduced below.

Being a complete eejit when it comes to computer matters I would seriously appreciate some advice on what to do. I still don't know if simply Restoring my computer (I'm on XP) to a date prior to the attack will help.

It looks like you have a new version. Could you mail a copy of C:\WINDOWS\msgaol.exe to the address in my profile?
I would like to send it to the developers of several spyware cleaners, so it can be added for detection.

Before you start please unzip hijackthis.exe to a folder of it´s own. The program creates backups in the folder it is in. In a Temp folder they easily disappear.

Check the following item in HijackThis.
Close all windows except HijackThis and click Fix checked: